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Official data from INPI

PROCESSO PARA SEPARAR O ÓXIDO DE ETILENO DE IMPUREZAS ALDEÍDICAS, E, PROCESSO DE ISOLAMENTO DE ÓXIDO DE ETILENO

PublicadaInvention Patent
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Application data

Number

PI8806786

Type

Invention Patent

Filing

12/21/1988

Publication

08/29/1989
View on INPI

Progress at the INPI

  1. Filing12/21/88
  2. Publication08/29/89
  3. Examination05/01/90
  4. Allowance07/16/96
  5. Grant04/29/97
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Atochem

FR

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Inventors

F. D. (pessoa física)

FR

G. L. (pessoa física)

FR

Technical data

IPC Classification

C07D 301/32C07D 303/04

Priority claims

FR

87.18246 · 12/22/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

08/29/1989

RPI 984

Pedido de patente depositado

#2.1

04/25/1989

RPI 966

Carta-patente expirada

#21.1

Patente extinta em 21/12/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/29/1997

RPI 1378

Notificação para pagamento de retribuição

#13.1

03/11/1997

RPI 1371

Deferimento

#9.1

07/16/1996

RPI 1337

Exigência - art. 36 da LPI

#6.1

12/05/1995

RPI 1305

Exigência - art. 36 da LPI

#6.1

02/07/1995

RPI 1262

Solicitação de exame técnico

#4.1

05/01/1990

RPI 1016

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